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| Name | Lines | Functions and Methods | CRAP | Classes and Traits | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| PostgresSchemaGrammar | 94.91% | 56 / 59 | 87.50% | 14 / 16 | 38.19 | 0.00% | 0 / 1 | |||
| wrap | 100.00% | 1 / 1 | 100.00% | 1 / 1 | 1 | |||||
| type | 100.00% | 15 / 15 | 100.00% | 1 / 1 | 16 | |||||
| autoIncrement | 100.00% | 1 / 1 | 100.00% | 1 / 1 | 1 | |||||
| compileNullsNotDistinctClause | 100.00% | 1 / 1 | 100.00% | 1 / 1 | 2 | |||||
| compilePartialIndexClause | 100.00% | 1 / 1 | 100.00% | 1 / 1 | 1 | |||||
| compileDeferrableClause | 100.00% | 1 / 1 | 100.00% | 1 / 1 | 2 | |||||
| compileDropIndex | 100.00% | 3 / 3 | 100.00% | 1 / 1 | 1 | |||||
| compileDropColumn | 100.00% | 1 / 1 | 100.00% | 1 / 1 | 1 | |||||
| compileSetColumnDefault | 0.00% | 0 / 2 | 0.00% | 0 / 1 | 2 | |||||
| compileDropColumnDefault | 0.00% | 0 / 1 | 0.00% | 0 / 1 | 2 | |||||
| compileModifyColumn | 100.00% | 15 / 15 | 100.00% | 1 / 1 | 5 | |||||
| compileAddForeignKey | 100.00% | 3 / 3 | 100.00% | 1 / 1 | 1 | |||||
| compileDropForeignKey | 100.00% | 2 / 2 | 100.00% | 1 / 1 | 1 | |||||
| compileAddCheck | 100.00% | 3 / 3 | 100.00% | 1 / 1 | 1 | |||||
| compileDropCheck | 100.00% | 2 / 2 | 100.00% | 1 / 1 | 1 | |||||
| assertValidIdentifier | 100.00% | 7 / 7 | 100.00% | 1 / 1 | 2 | |||||
| 1 | <?php | |
| 2 | ||
| 3 | declare(strict_types=1); | |
| 4 | ||
| 5 | namespace BlueprintAU\Radiant\Database\Schema\Grammars; | |
| 6 | ||
| 7 | use BlueprintAU\Radiant\Database\Schema\Blueprint; | |
| 8 | use BlueprintAU\Radiant\Database\Schema\Enums\ColumnType; | |
| 9 | ||
| 10 | /** | |
| 11 | * The Postgres dialect of the schema grammar. | |
| 12 | * | |
| 13 | * Identifiers are quoted with double quotes (embedded quotes doubled). | |
| 14 | * Auto-increment renders as `GENERATED BY DEFAULT AS IDENTITY` (the modern | |
| 15 | * SQL-standard identity column, preferred over `SERIAL`). Postgres supports | |
| 16 | * dropping columns natively. | |
| 17 | */ | |
| 18 | final class PostgresSchemaGrammar extends SchemaGrammar | |
| 19 | { | |
| 20 | /** | |
| 21 | * Wrap an identifier in Postgres double quotes. | |
| 22 | * | |
| 23 | * @param string $value | |
| 24 | * @return string | |
| 25 | */ | |
| 26 | protected function wrap(string $value): string | |
| 27 | { | |
| 28 | return '"' . str_replace('"', '""', $value) . '"'; | |
| 29 | } | |
| 30 | ||
| 31 | /** | |
| 32 | * Map a logical column type to Postgres' native type. | |
| 33 | * | |
| 34 | * Timestamp types render declared precision (`timestamp(3)`) — a display | |
| 35 | * rounding hint; Postgres always stores microseconds natively. | |
| 36 | * | |
| 37 | * @param ColumnType $type | |
| 38 | * @param int|null $length | |
| 39 | * @param int|null $precision | |
| 40 | * @param int|null $scale | |
| 41 | * @return string | |
| 42 | */ | |
| 43 | public function type(ColumnType $type, ?int $length = null, ?int $precision = null, ?int $scale = null): string | |
| 44 | { | |
| 45 | return match ($type) { | |
| 46 | ColumnType::String => 'varchar' . $this->suffix($this->requireLength($length)), | |
| 47 | ColumnType::Char => 'char' . $this->suffix($this->requireLength($length)), | |
| 48 | ColumnType::Text => 'text', | |
| 49 | ColumnType::BigInt => 'bigint', | |
| 50 | ColumnType::Int => 'integer', | |
| 51 | ColumnType::Decimal => 'numeric' . $this->suffix($precision, $scale), | |
| 52 | ColumnType::Float => 'double precision', | |
| 53 | ColumnType::Boolean => 'boolean', | |
| 54 | ColumnType::Date => 'date', | |
| 55 | ColumnType::DateTime => 'timestamp' . $this->suffix($precision), | |
| 56 | ColumnType::Timestamp => 'timestamp' . $this->suffix($precision), | |
| 57 | ColumnType::Json => 'jsonb', | |
| 58 | ColumnType::Enum => 'varchar' . $this->suffix($this->requireLength($length)), | |
| 59 | ColumnType::Binary => 'bytea', | |
| 60 | ColumnType::Uuid => 'uuid', | |
| 61 | }; | |
| 62 | } | |
| 63 | ||
| 64 | /** | |
| 65 | * The Postgres auto-increment clause. | |
| 66 | * | |
| 67 | * @return string | |
| 68 | */ | |
| 69 | protected function autoIncrement(): string | |
| 70 | { | |
| 71 | return 'GENERATED BY DEFAULT AS IDENTITY'; | |
| 72 | } | |
| 73 | ||
| 74 | /** | |
| 75 | * Postgres 15+ renders the NULLS clause explicitly in both directions. | |
| 76 | * | |
| 77 | * @param bool $nullsNotDistinct | |
| 78 | * @return string | |
| 79 | */ | |
| 80 | protected function compileNullsNotDistinctClause(bool $nullsNotDistinct): string | |
| 81 | { | |
| 82 | return $nullsNotDistinct ? 'NULLS NOT DISTINCT' : 'NULLS DISTINCT'; | |
| 83 | } | |
| 84 | ||
| 85 | /** | |
| 86 | * Postgres renders partial (filtered) indexes — `CREATE INDEX ... WHERE | |
| 87 | * predicate`. | |
| 88 | * | |
| 89 | * @param string $predicate | |
| 90 | * @return string | |
| 91 | */ | |
| 92 | protected function compilePartialIndexClause(string $predicate): string | |
| 93 | { | |
| 94 | return 'WHERE ' . $predicate; | |
| 95 | } | |
| 96 | ||
| 97 | /** | |
| 98 | * Postgres renders `DEFERRABLE [INITIALLY DEFERRED]` on foreign keys. | |
| 99 | * | |
| 100 | * @param bool $initiallyDeferred | |
| 101 | * @return string | |
| 102 | */ | |
| 103 | protected function compileDeferrableClause(bool $initiallyDeferred): string | |
| 104 | { | |
| 105 | return $initiallyDeferred ? 'DEFERRABLE INITIALLY DEFERRED' : 'DEFERRABLE'; | |
| 106 | } | |
| 107 | ||
| 108 | /** | |
| 109 | * Postgres drops an index by name alone: `DROP INDEX name`. | |
| 110 | * | |
| 111 | * @param string $name | |
| 112 | * @param string $table | |
| 113 | * @return string | |
| 114 | */ | |
| 115 | public function compileDropIndex(string $name, string $table): string | |
| 116 | { | |
| 117 | unset($table); | |
| 118 | $this->assertValidIdentifier($name); | |
| 119 | ||
| 120 | return 'DROP INDEX ' . $this->wrap($name); | |
| 121 | } | |
| 122 | ||
| 123 | /** | |
| 124 | * Compile one column's `DROP COLUMN` clause. | |
| 125 | * | |
| 126 | * @param string $column | |
| 127 | * @return string | |
| 128 | */ | |
| 129 | protected function compileDropColumn(string $column): string | |
| 130 | { | |
| 131 | return $this->wrap($column); | |
| 132 | } | |
| 133 | ||
| 134 | /** | |
| 135 | * Compile the statement that restores a column's declared default. | |
| 136 | * | |
| 137 | * @param string $table | |
| 138 | * @param string $column | |
| 139 | * @param mixed $default A scalar or an Expression. | |
| 140 | * @return string | |
| 141 | */ | |
| 142 | #[\Override] | |
| 143 | protected function compileSetColumnDefault(string $table, string $column, mixed $default): string | |
| 144 | { | |
| 145 | return 'ALTER TABLE ' . $this->wrap($table) . ' ALTER COLUMN ' . $this->wrap($column) | |
| 146 | . ' SET DEFAULT ' . $this->compileDefault($default); | |
| 147 | } | |
| 148 | ||
| 149 | /** | |
| 150 | * Compile the statement that drops a column's temporary default. | |
| 151 | * | |
| 152 | * @param string $table | |
| 153 | * @param string $column | |
| 154 | * @return string | |
| 155 | */ | |
| 156 | #[\Override] | |
| 157 | protected function compileDropColumnDefault(string $table, string $column): string | |
| 158 | { | |
| 159 | return 'ALTER TABLE ' . $this->wrap($table) . ' ALTER COLUMN ' . $this->wrap($column) . ' DROP DEFAULT'; | |
| 160 | } | |
| 161 | ||
| 162 | /** | |
| 163 | * Compile the `ALTER TABLE ... ALTER COLUMN` statements — Postgres' | |
| 164 | * in-place content-drift form. | |
| 165 | * | |
| 166 | * @param Blueprint $blueprint | |
| 167 | * @return list<string> | |
| 168 | */ | |
| 169 | public function compileModifyColumn(Blueprint $blueprint): array | |
| 170 | { | |
| 171 | $table = $blueprint->getTable(); | |
| 172 | $columns = $blueprint->getColumns(); | |
| 173 | if ($columns === []) { | |
| 174 | throw new \InvalidArgumentException('Cannot modify columns with no columns defined.'); | |
| 175 | } | |
| 176 | ||
| 177 | $statements = []; | |
| 178 | ||
| 179 | foreach ($columns as $column) { | |
| 180 | $name = $this->wrap($column['name']); | |
| 181 | $base = 'ALTER TABLE ' . $this->wrap($table) . ' ALTER COLUMN ' . $name; | |
| 182 | ||
| 183 | // TYPE first: the type text is the identity of the change, and | |
| 184 | // a type change must land before constraints that depend on it. | |
| 185 | // The USING clause casts the existing values explicitly — | |
| 186 | // Postgres only auto-casts implicitly-castable pairs, so a | |
| 187 | // text→numeric / text→timestamp reshape needs the explicit cast. | |
| 188 | // The full shape (length, precision, scale) renders so a | |
| 189 | // Decimal(10,2) stays numeric(10,2) — otherwise the second | |
| 190 | // diff sees a perpetual drift. | |
| 191 | $type = $this->type($column['type'], $column['length'], $column['precision'], $column['scale']); | |
| 192 | $statements[] = $base . ' TYPE ' . $type . ' USING ' . $name . '::' . $type; | |
| 193 | ||
| 194 | // Nullability second: SET NOT NULL validates existing rows, so | |
| 195 | // it must come after the type conversion. | |
| 196 | $statements[] = $column['nullable'] ? $base . ' DROP NOT NULL' : $base . ' SET NOT NULL'; | |
| 197 | ||
| 198 | // Default last: a null desired default means DROP DEFAULT (the | |
| 199 | // column carries no default); anything else renders the literal. | |
| 200 | $statements[] = $column['default'] === null | |
| 201 | ? $base . ' DROP DEFAULT' | |
| 202 | : $base . ' SET DEFAULT ' . $this->compileDefault($column['default']); | |
| 203 | } | |
| 204 | ||
| 205 | return $statements; | |
| 206 | } | |
| 207 | ||
| 208 | /** | |
| 209 | * Compile an `ALTER TABLE ... ADD CONSTRAINT ... FOREIGN KEY` | |
| 210 | * statement — Postgres' in-place FK-add form. | |
| 211 | * | |
| 212 | * @param string $table | |
| 213 | * @param array{columns: list<string>, references: list<string>, onDelete: \BlueprintAU\Radiant\Database\Schema\Enums\ForeignKeyAction|null, onUpdate: \BlueprintAU\Radiant\Database\Schema\Enums\ForeignKeyAction|null, deferrable: bool, initiallyDeferred: bool} $foreignKey | |
| 214 | * @param string $name | |
| 215 | * @return string | |
| 216 | */ | |
| 217 | public function compileAddForeignKey(string $table, array $foreignKey, string $name): string | |
| 218 | { | |
| 219 | $this->assertValidIdentifier($name); | |
| 220 | ||
| 221 | return 'ALTER TABLE ' . $this->wrap($table) . ' ADD CONSTRAINT ' . $this->wrap($name) . ' ' | |
| 222 | . $this->compileForeignKeyConstraint($foreignKey); | |
| 223 | } | |
| 224 | ||
| 225 | /** | |
| 226 | * Compile an `ALTER TABLE ... DROP CONSTRAINT` statement — Postgres' | |
| 227 | * in-place constraint-drop form (covers FKs and CHECKs). | |
| 228 | * | |
| 229 | * @param string $table | |
| 230 | * @param string $name | |
| 231 | * @return string | |
| 232 | */ | |
| 233 | public function compileDropForeignKey(string $table, string $name): string | |
| 234 | { | |
| 235 | $this->assertValidIdentifier($name); | |
| 236 | ||
| 237 | return 'ALTER TABLE ' . $this->wrap($table) . ' DROP CONSTRAINT ' . $this->wrap($name); | |
| 238 | } | |
| 239 | ||
| 240 | /** | |
| 241 | * Compile an `ALTER TABLE ... ADD CONSTRAINT ... CHECK` statement — | |
| 242 | * Postgres' in-place CHECK-add form. | |
| 243 | * | |
| 244 | * @param string $table | |
| 245 | * @param string $name | |
| 246 | * @param string $expression | |
| 247 | * @return string | |
| 248 | */ | |
| 249 | public function compileAddCheck(string $table, string $name, string $expression): string | |
| 250 | { | |
| 251 | $this->assertValidIdentifier($name); | |
| 252 | ||
| 253 | return 'ALTER TABLE ' . $this->wrap($table) . ' ADD CONSTRAINT ' . $this->wrap($name) | |
| 254 | . ' CHECK (' . $expression . ')'; | |
| 255 | } | |
| 256 | ||
| 257 | /** | |
| 258 | * Compile an `ALTER TABLE ... DROP CONSTRAINT` statement for a CHECK. | |
| 259 | * | |
| 260 | * @param string $table | |
| 261 | * @param string $name | |
| 262 | * @return string | |
| 263 | */ | |
| 264 | public function compileDropCheck(string $table, string $name): string | |
| 265 | { | |
| 266 | $this->assertValidIdentifier($name); | |
| 267 | ||
| 268 | return 'ALTER TABLE ' . $this->wrap($table) . ' DROP CONSTRAINT ' . $this->wrap($name); | |
| 269 | } | |
| 270 | ||
| 271 | /** | |
| 272 | * Postgres caps identifiers at 63 bytes — fail fast at compile time, | |
| 273 | * never silently truncate. | |
| 274 | * | |
| 275 | * @param string $name | |
| 276 | * @return void | |
| 277 | * @throws \InvalidArgumentException | |
| 278 | */ | |
| 279 | public function assertValidIdentifier(string $name): void | |
| 280 | { | |
| 281 | if (strlen($name) > 63) { | |
| 282 | throw new \InvalidArgumentException(sprintf( | |
| 283 | 'Identifier [%s] exceeds Postgres\'s 63-byte limit (%d bytes); ' | |
| 284 | . 'declare a shorter #[Unique(name: ...)] / #[Index(name: ...)].', | |
| 285 | $name, | |
| 286 | strlen($name), | |
| 287 | )); | |
| 288 | } | |
| 289 | } | |
| 290 | } |